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Home Archives Thermal Letter Officers Future meetings Assembly for International Heat Transfer Conferences

ISSN Print: 2377-424X

International Heat Transfer Conference 12
August, 18-23, 2002, Grenoble, France

Use of hygrothermal numerical modelling to identify optimal retrofit options for high-rise buildings

Get access DOI: 10.1615/IHTC12.2670
6 pages

Abstract

Using numerical modelling to simulate and predict the hygrothermal (i.e., combined thermal and moisture) performance of building envelopes is very recent. Key questions include: how to model accurately coupled heatair and capillary moisture transports in building envelope components; a satisfactory definition of a set of representative environmental boundary conditions to be used for long-term hygrothermal calculations; how to characterize the moisture- and temperature-dependent properties; the effect of aging and cyclic environmental conditions on porous building materials; and how to develop sound criteria to predict the moisture durability of building envelope components. This paper presents the findings of a research project involving detailed hygrothermal modelling. The heat, air and moisture results demonstrated that the in-house model could be adapted successfully for high-rise building calculations. The findings also show how the long-term hygrothermal performance of typical wall systems can be assessed using numerical modelling. A short description of an advanced in-house heat, air and moisture model, hygIRC, is also presented.
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